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From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Cc: alim.akhtar@samsung.com, avri.altman@sandisk.com,
	bvanassche@acm.org, James.Bottomley@HansenPartnership.com,
	martin.petersen@oracle.com, peter.wang@mediatek.com,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org,
	Shawn Guo <shengchao.guo@oss.qualcomm.com>
Subject: Re: [PATCH] Revert "scsi: ufs: core: Remove unnecessary block I/O quiesce for clock scaling"
Date: Sun, 26 Jul 2026 15:29:38 -0400	[thread overview]
Message-ID: <yq1fr151red.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <20260723124733.341789-1-manivannan.sadhasivam@oss.qualcomm.com> (Manivannan Sadhasivam's message of "Thu, 23 Jul 2026 14:47:33 +0200")


Manivannan,

> This reverts commit 85b2b966285498e1b551ac85f02c79cd06c0cff0.
>
> Qcom UFS Host Controllers do not support scaling clocks when the
> traffic is ongoing. But the offending commit removed the block I/O
> quiesce in the clock scaling path, which causes below UFS failures
> during clock scaling:

Dropped from 7.3/scsi-queue.

Thanks!

-- 
Martin K. Petersen

      parent reply	other threads:[~2026-07-26 19:30 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-23 12:47 [PATCH] Revert "scsi: ufs: core: Remove unnecessary block I/O quiesce for clock scaling" Manivannan Sadhasivam
2026-07-23 13:03 ` Konrad Dybcio
2026-07-23 13:23 ` Peter Wang (王信友)
2026-07-23 19:15 ` Bart Van Assche
2026-07-24  1:10 ` Shawn Guo
2026-07-24 14:19 ` Bart Van Assche
2026-07-26  2:40   ` Shawn Guo
2026-07-26 13:44 ` David Heidelberg
2026-07-26 19:29 ` Martin K. Petersen [this message]

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